Brain and behaviour are strongly correlated. Dysfunctions, structural and functional abnormalities have various causes and can result in problems in thinking, doing and feeling. Damage to a developing brain will have different consequences than damage to an adult brain. Neuropsychological assessment is done by history taking (interviewing parents and teachers), doing observations (How is the child behaving in class? Is the child easily distracted? How does the child behave in interactions with the teacher and with other children?), tests and questionnaires. Neuropsychological assessments in children are often long-term follow-up assessment. This is done because some weaknesses will be resolved within months or years or new deficits may develop due to the developing brain. There are different forms of treatment in clinical child neuropsychology. Psychoeducation is about educating the child, parents, teachers and others around about specific difficulties and how they display in daily life. Other forms of treatment are advising the child, parents and the school about how to deal with these difficulties, giving cognitive training, psychosocial counselling, enhancing coping strategies, (cognitive) behavioural therapy and supporting/counselling the family and the school. Normal brain developmentProliferation is the process of cell growth. It starts in the first month of pregnancy and it is a very rapid process, since up to 250.000 neurons are developed every minute. Migration is the process in which neurons are transported to their location via glia cells. This process ends at birth. Differentiation is the process of developing into specific neurons. This process ends just after birth. Synaptogenesis is the process of developing synapses after birth. Apoptosis is cell death. This is done because some neurons won’t be used or are not necessary (anymore). Myelination continues after birth. All parts of the brain will go through these stages, but...